Is PkHex allowed here? Need something...

[atlas20]

I've been trying to get a perfect Infernape but it seems impossible to get the perfect one, i cant give the HA to the new pokemon i breed, not even with the Ever stone or the Destiny knot, so a random give gave me a perfect infernape, but it's not exacly the one I want, i need another nature, and i dont want it to be shiny, so if someone could change that from my Infernape with pkhex or something I would be extremely glad. Thank you, and sorry if there's any rule that talks about pkhex and stuff...